You Can Create an Instance of a struct Without the new Keyword

Like a class, you can create an instance of a struct using the new keyword.  You can either invoke the default parameterless constructor, which initializes all fields in the struct to their default values, or you can invoke a custom constructor.

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// Method 1 - Parameterless constructor, data in struct initialized to default values DogCollar collar = new DogCollar();   // Method 2 - Call custom constructor DogCollar collar2 = new DogCollar(10.0, 0.5);

In either case, a constructor is called.

You can also create an instance of a struct by just declaring it, without using the new operator.  The object is created, although you can’t use it until you’ve explicitly initialized all of its data members.

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// Method 3 - Just declare it DogCollar collar3;   // Error - Can't use collar3 yet (use of unassigned field) Console.WriteLine(collar3.Length);

We need to first initialize all data members:

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// Correct - initialize first DogCollar collar3; collar3.Length = 10.0; collar3.Width = 5.0; Console.WriteLine(collar3.Length);

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